from tkinter import *
import tkinter.messagebox as messagebox
import socket

class Application(Frame):

    def __init__(self, master = None):
        Frame.__init__(self, master)
        self.pack()
        self.createWidgets()

    def createWidgets(self):
        # self.helloLabel = Label(self, text='Hello, world!')
        # self.helloLabel.pack()
        # self.quitButton = Button(self, text='Quit', command=self.quit) # self.quit：推出程序
        # self.quitButton.pack()
        self.nameInput = Entry()
        self.nameInput.pack()
        self.alertButton = Button(self, text='Hello', command=self.hello)
        self.alertButton.pack()

    def hello(self):
        name = self.nameInput.get() or 'world'
        messagebox.showinfo('Message', 'Hello, %s' % name)

app = Application()
# 设置窗口标题:
app.master.title('标题')
# 主消息循环:
app.mainloop()
